Paper drier and the like



Aug. 3 1926.

W. B. FULTON PAPER DRIER AND THE LIKE Filed May 20 1925 A TTORNE Y Patented Aug. 3, 1926.

UNITED STATES WILLIAM B. FULTON, OI MIDDLE'IOWN, 0310.

PAPER DRIER AND THE LI KE.

Application filed May 20, 1925. s erial No. 31,520.

This invention relates to improvements in paper driers, having particular reference to improved means. for extracting air and the condensate from steam' injected into drier rolls to maintain the same at a raised temperature suitable for drying the paper web as the same traverses, the rolls.

The object attained in the practice of the invention is greater uniformity of temperature of the rolls and therefore more rapid and uniform drying of the paper.

To this end, my invention consists in means for controlling injection of the steam into the rolls, in equalizing distribution of the steam in the rolls, and means for extracting the steam condensate and air thus maintainin even temperature of the rolls at any desired point. I

In the accompanying drawings:

Fig. 1 is a longitudinal sectional view of a paper drier roll illustrating my invention as applied thereto;

Fig. 2 is a cross-sectional view of the drier taken on line 22 of Fig. 1;

Figs. 3 and 4 are detail views of valve mechanisms for regulating the injection of steam into the drier rolls;

. Fig. 5 is a detail of the valve controlling mechanism.

As here shown,'the drier 1 including the journals 2 and 3 upon whic the roll is rotatably supported, and the go r 4 for rotatin the drier are of well known conventiona construction. I

My invention, as applied .to the drier roll, consists of a fixed tube 5 disposed axially in drier 1, extended through journal 3 at one end and connected to a steam line 6, and extending into journal 2 at the other end and there 7provided with a lubricating mechanism The tube 5 is provided with a series of valves 89 and 10 operatively connected to a rod 11 and by means of the rod to valve regulating mechanism 12 which consists of a rod actuating member 13 for shifting the rod axially, the actuating member bein pivotally connected to the rod as at 14 an fulcrumed on an outwardly extended bracket.

adapted to register with ports 19, andan intermediate port 20 in tube 5 accordingly as the shutter is shifted in one direction or the other relative to the ports. The relation of shutter 17 to the ports in valve 8 is just) the opposite from that of the shutter in valve 9, that is to say, when one of the ports 19 in valve 8 is full-open the corresponding port 19 in valve 9-is full-closed, the same relative relation of the valves being effected in all adjustments of the valves for a purpose which will presently bedescribed.

Valve 10 is also provided with a shutter 21 connected to rod 11 as at 11 in a manner to adapt the shutter to be actuated rotatably but" not axially of tube 5, the valve difl'erin in this respect from valves 8 and 9 in whicfi the shutters 17 operate axially but not rotatably of the tube. Shutter 21 is provided with ports 22 adapted to be moved 1nto register, u on rotation of shutter 21, with correspon in ports 23 in tube 5 to any desired extent as etermined by rotation of the valve adjusting rod 11, the extent of adjustment of the valve being indicated by. a pointer 24 registering on the graduated scale 24", the adjustment of valves 8 and 9 being indicated by a pointer 25 registering on the, scale 25".

The function of valves 8, 9 and 10 is to regulatethe volume of steam introduced into the drier through tube 5 and to control the distribution of the steam in the drier so that the heating of the drier can be maintained uniform throughout its length, thus to efli'ect a uniform drying action on the paper as it traverses the'drier units. It will be observed that valves 8 and 9 are adjustable independently of valve 10 and, vice versa, valves 8 and 9 being adjusted in unison one with the other but, as stated, oppositely one of the other with respect to opening and closin of the valve orts. Thus introduction an distribution 0 the steam in the drier can be controlledv effectually and heating of the drier maintained uniform by simple manipulations of the valve actuating member 13.

To heat. the drier units b .steam it is necessary that the condensate om the steam and non-condensable gases or air be removed from the drier as accumulation of water and air in the drier prevents elfective heating. of the same. The best heating conditions are obtained when the condensate and air are maintained at the minimum, that is to say, when any accumulation of water and air in the drier 1s revented.

To this end, employ improved means for f with a scoop or pan-shaped receptacle 28 pivoted as at 29 on the free ends of branch pipes 27 in a manner to permit the forward edge of the scoops to contact with the drier drum thus to cause any water in the bottom of the drier )0 be taken up by scoops. It

will be observed that the capacity of the drain line increases outwardly, the who of increase being such that the capacity of the line at all points will be more than equal to the capacity of the branches 27 discharging therethrough.

Discharge of the condensate and air through line 26 is efiected by maintaining relative pressures in the steam line 56 an the disc arge line 26, the steam line and drier carrying a higher pressure than the discharge line, the discharge of water from the drier being constant as long as the water rises to the level of ports 30 at .the lower. extremities of the branch pipes 27, which are'preferably curved rearwardly, as illustrated in Fig. 2, to relieve the pipes of strain resulting from the action of the 'water on scoops 28. The head pressure of the water on the scoops also has the eifect of causin the water to rise in pipes 27 and discharge through the drain line, thus acting to further reduce the accumulation of water in the driers. c

From the foregoing detailed description and the illustrations of the drawings, the construction and operation of my improved drier drainage will be readily understood. It will be seen that the means afforded for uniform heatin of the drier units will be efiectiveto attain the objects of my invention as herein set forth.

Having described my invention, I claim: 1. A pa er drier including in combination with a drier roll a steam line extended into mitted into the roll whereby to regulate heating thereof.

2. A paper drier including in combination with a drier roll a steam line extended into said roll, a valve arranged in said line within the roll for controlling steam admitted into the roll whereby to regulate heating thereof, and means arranged externally of the roll for ad'usting said valve.

3. A aper rier including in combination with a drier roll a steam line extending into said roll, a valve arran ed in said line within the roll for contro ing steam admitted into the roll whereby to re late heatin thereof, and means arran ed the roll for adjusting sai valve including thereof.

externally o 4. A paper drier including in combination with a drier roll a steam line including a tubular portion extended into said roll, a plurality of valves arranged slidably upon the tubular portion of said line for controlling steam admitted into the rollwhereby to regulate heating thereof, and means ar ranged externally of the roll for adjusting said valves.

5. A paper drier including in combination with a drier roll a steam line including a tubular portion extended into said roll, a plurality of valves arranged in said tubular portion and adapted to be adjusted to function oppositely one of the other to control steam admitted to the roll whereby to regulate heating thereof, and common means external of the roll for adjusting the valves.

6. A paper drier including in combination with a drier roll a steam line including a tubular portion extended into said roll, a plurality of valves arranged in said tubular portion, spaced one from another and adapt ed to be adjusted to control distribution of steam admitted to the roll to effect heating thereof, and means external of the roll for adjusting the valves. I

7. A paper drier including in combination with a drier roll a steam line includin a tubular portion extended into said rol, a

ort in said tubular portion and a part adjustable relative to said port to open and close the same to control steam admitted to the roll whereby to effect heating thereof, and means external of the roll for adjusting said port.

8. A paper drier includingliln combination with a drier roll a steam e includin a tubular portion extended into said rol a plurality of valves arranged in said tubular portion, certain of the valves being adjustable axially and rotatabl respectively of the tubular portion whereb to control distribution of steam admitted to the roll and to effect uniform heating thereof, and means external of the roll common to said valves for regulating the same. v

9. A paper drier including in combination with a drier roll a steam line including a tubular portion extended into said roll, a plurality of valves arranged in said tubular portion, certain of the valves being adjustable axially and rotatably respectively of the tubular portion whereby to control distribution of steam-admitted to the roll and to ef feot uniform heating thereof, and means external of the roll common to said valves for regulating the same including means to indicate the extent of said regulation.

10. A paper drier includin in combination with a drier roll, a steam ine including a tubular ortion ext ded into said roll, a valve in said tubular p rtion for controlling steam admitted into the drier roll throug said line to efiect heating of the roll, and

steam into said roll, a discharge line con nected to the roll to remove the steam condensate and air therefrom, said line including a curved depending branch having aport and a member adapted to take-up the condensate from the bottom of said roll and to coact with said port in removing the samefrom the roll.

13. A paper drier including in combination with a drier roll, means for injecting steam into. said roll, a discharge line connected to the roll to remove the steam condensate and air therefrom, said line includ ing a depending branchhaving a port and a member adapted to take-up the condensate from the bottom of the roll and to raise the same to the level of said port.

14:. A paper drier including in combination with a drier roll, a steam line connected to said roll whereby to efi'ect heating thereof, a discharge line connected to the roll to re move the steam condensate and air therefrom, said line including a plurality of clepending branches each havinga port and'a member adapted to scoop the condensate from the bottom of the roll and to raise the same to the level of saidports.

15. A paper drier including in combination with a drier roll, a steam line connected to said roll whereby to effect heating thereof, a discharge line connected to the roll to remove the steam condensate and air therefrom, said line having a lesser pressure de termined relative to the pressure of the steam line to effect outward flow of the condensate and air through the discharge line, and

means comprising a valve within the drier roll-for regulating the distribution of steam within the drier roll.

. 16. A paper drier including in comblnation with a drier roll, a steam line connected to said roll whereby to effect heating thereof, a dischargejl'ine connected to the roll to remove the steam condensate and air therefrom, said line including a depending branch having a port and a member pivoted on said branch and adapted to contact with-the bottom of the drier roll to take-up and raise the condensate toi'the level of said port whereby to effect the discharge thereof.

17. A paper :drier including in combination with a drier roll, a steam line connected to said roll whereby to effect heating thereof, a discharge line connected to the roll to remove the steam condensate and air therefrom, said line including a plurality of depending branches each communicating with the bottom of the drier roll to take-up the condensate, the combined capacity of said branches being no greater than the capacity of said main line.

18. A paper drier including in combination with a drier roll, a steam line extended into said roll concentrically to the axis thereof, a discharge line for the steam condensate and air extended into the roll through the steam line and having depending branches extended outwardly of the steam line and communicating with the bottom of the roll whereby to takeup the condensate and air.

19. A paper drier including in combination with a drier roll, a steam line connected to said ,roll whereby to effect heating thereof, a discharge line connected to the roll to remove the steam condensate and air therefrom, said line including a depending branch having a port and a member, as a scoop, set oppositely to the rotation of the roll and acting to retard the movement of the condensate incident to rotation of the roll and to raise the same to the level of said port wlliereby to effect extraction thereof from the r0 1.

In testimony whereof, I aflix my signature. 

